As for myself, I'm really happy that the tp community finally has a truly canonical source to refer to. Some interesting observations from looking at the preview on Amazon:

mi o moku e ijo pona.I should eat good things. Here, o is used in the first person in a manner similar to the jussive -u in Esperanto. I found two examples in Pije with mi mute o where it was translated as let's, but I don't think I've seen singular mi o before.

jan sona pi toki pona li pu lon tenpo mute.The scholar of Toki Pona consults the official book many times.mama mije li pu mute.Fathers use the Toki Pona book a lot.So apparently pu is a thing now, and it just means consult the Toki Pona book That's kind of random, and a bit disappointing IMO.

Also, luka is officially a number again (5)! mute now is the numeral for 20 and ale means 100. (Yeah, it seems that ali was made obsolete.)

mi toki lon toki pona.I speak in Toki Pona. Not kepeken!

toki nanpa wan.First language. No pi!

Only three pages each for pi and la seems a bit too superficial IMO, but I'm hoping that the questions that are not answered directly in the grammar sections can be inferred indirectly from the provided texts.

I haven't got my copy of the final form yet and don't remember how it went in the draft version, but the contrast between 'mi o moku', an imperative addressed to oneself, and 'o mi moku', an optative or some such, "I hope I'll eat" is nice.I don't care for the additional ambiguities added by doubling the meanings of 'mute' and 'ale/i'. They don't solve the large-number problem, either.I think that the weight of the corpus for 'kepeken' may outweigh the prescription for 'lon' , but, if not, it is a relatively easy correction to make, So far as I can remember, tthe concurrent question of talking about something doesn't have an answer in the book. Nor do a number of other questions, alas. But this is a very welcome introductory book.

So apparently pu is a thing now, and it just means consult the Toki Pona book

Actually, the definition is "interacting with the official Toki Pona book". I don't really understand the "toki nanpa wan" as "first language".

If you ewer went through the old wiki (which I guess has been killed), there was actually a page for the sign language. It was a lot less thorough, but the general principles were the same. I'm looking forward to reading this in full, and learning the hieroglyphs and sign language.

No 'pi' with 'nanpa' followed by numbers is pretty well-established as a generalization of the fact that a string of numbers as a modifier does not take 'pi'. There have been comments on this several times on the forums and Facebook (usually with answering objections). The earliest specimens were back in the old corpus.

S o VP is the old standard, short for S o o VP (obligatory I think, unless a comma intervenes) . Using 'mi' for S is novel but useful for the self-help sorts. The S is not rally the subject but a vocative.

Who is the publisher here? I don't know nor that they are Muslim (or do you mean one that publishes anything about Islam or by Muslims, which would knock out most publishers?). I gather that Sonja is currently Muslim, if that affects your participation in tp.